What is the chimney effect?
What will be an ideal response?
The chimney effect is the phenomena where hot gases rise vertically, due to
thermal expansion and a buoyancy of the gases. Chimneys and stacks are
designed to take advantage of the effect and create a flow of the gases without
outside, mechanical inputs.
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Which statement is true about asteroids? a. All asteroids are found in the asteroid belt between Mars and Jupiter. b. Asteroids are also called dwarf planets
c. Asteroids have an irregular shape and are battered by impact cratering. d. All asteroids have bright, reflective surfaces. e. Asteroids originated from older moons.
Nitrogen dioxide and dinitrogen tetroxide are really
A) the same compound. B) different compounds. C) not possible as compounds. D) best represented as NO.
The relative size of the mantle of Earth compared to the solid inner core of Earth is most similar to:
A) the peel of an orange as compared to the meat of the orange. B) the rind of a watermelon as compared to the meat of the watermelon. C) the skin of a grape as compared to the meat of the grape. D) the meat of a peach as compared to the pit of the peach. E) the meat of a cherry as compared to the pit of the cherry.
Q1 has 50 electric field lines radiating outward and Q2 has 250 field lines converging inward. What is the ratio Q1/Q2?
a. 5 b. ?5 c. 1/5 d. ?1/5 e. 0